I know everyone is using like these protected batteries for their mods. I am wondering why no one uses regular rechargeable nimh or nicad, and just build a protected circuit or a circuit to regulate and shut off. Is there anyway possible to do this? Or do slow down the amperage from the 2500mah to lets say 900mah. I am wondering how many mah a 510 atty can take?
Batteries.
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mah is a rating of time really. How many amps a battery will put out in a hour. Mah stands for milliamp hours. Main reason people dont use nimh or nicd is there voltage. They are 1.2 nominal volts as where the li ion are rated @ 3.7 volts. You would have to run 3 in series to get the voltage of one li ion. So it takes up a bit of space. There are a few folks that use them though. There are circuits that you can build that would limit the amp flow but atomizers want a certain amount of amps at different voltages. Like a 2.2 ohm atomizer @ 3.7 volts would consume 1.68 amps. IF you try to limit that performance will go down. I have a 3.7 volt battery sitting here it has a max discharge rating of 5.2 amps. If i put my 2.2 ohm atomizer on it and fired it up it will only use 1.68 amps @ 3.7 volts. So as far as atomizers go they take what they need. I hope this helps let me know if it is confusing i will try to explain it better.
Well i understand about the bulk, but for me it would be more convenient to use rechargeables and less expensive, since I don't live in a major city or anywhere that would really sell those types of batteries, i can only get them online, and radioshack wants a arm and a leg. So im more practical. I understand the mah, my husband really is the one who wants to do this for me, he can build pretty much anything, he just doesn't want to burn the atty up or the battery explode. So far I have gathered, it can run at any mah, the voltage needs to be at what I want it to be which will be 4.5v he needs to know what the amps are optimal. I think he is going to use a laser circuit to regulate it or whatever LOL, but the amps are what he needs to know if you have any idea, and i suppose they are all different getting in to the mega attys and all of that?
Amps depend on the atomizer resistance. Since you've decided on 4.5V, the Amps can be calculated based on Volts/Resistance.
I use 4.5V with a 2.8 Ohm atty for ~7.2 Watts (1.6 Amps).
Atty Amps Power(Watts)
1.50 3.00 13.50
1.80 2.50 11.25
2.00 2.25 10.13
2.50 1.80 8.10
2.80 1.61 7.23
3.00 1.50 6.75
3.20 1.41 6.33
I use 4.5V with a 2.8 Ohm atty for ~7.2 Watts (1.6 Amps).
Atty Amps Power(Watts)
1.50 3.00 13.50
1.80 2.50 11.25
2.00 2.25 10.13
2.50 1.80 8.10
2.80 1.61 7.23
3.00 1.50 6.75
3.20 1.41 6.33
Zoey,
Point your husband to some of the mod threads. Search for switching regulator or the NiMh "Puck".
An atty/cartomizer is a linear device (except for a little temperature coefficient). Turn up the voltage a little, current goes up a little. A Laser diode is a nonlinear device. Turn up the voltage until it starts but give it unfettered access to the battery and it will fry itself. They need current limiting to keep from conducting too much electricity. If you put 4 volts directly to a laser diode without current limiting it will instantly fry. 4 volts to an atty will only get a little hotter than 3.7 volts but not quite as hot as 4.5 volts. Yes, go too high and it will fry.
Check threads in the the supplier section for Nimh batteries and Li-ion protected batteries.
Find some good reading material here for your inventor husband
Point your husband to some of the mod threads. Search for switching regulator or the NiMh "Puck".
An atty/cartomizer is a linear device (except for a little temperature coefficient). Turn up the voltage a little, current goes up a little. A Laser diode is a nonlinear device. Turn up the voltage until it starts but give it unfettered access to the battery and it will fry itself. They need current limiting to keep from conducting too much electricity. If you put 4 volts directly to a laser diode without current limiting it will instantly fry. 4 volts to an atty will only get a little hotter than 3.7 volts but not quite as hot as 4.5 volts. Yes, go too high and it will fry.
Check threads in the the supplier section for Nimh batteries and Li-ion protected batteries.
Find some good reading material here for your inventor husband
To be honest. I have found one 3.7V Lion to be cheaper than 4 nihm batteries and you will get better performance and life out of them. If you need the 4.5v then I guess going with the nihm would be an easier option though.
I agree in general with L-ion comments above.... I go with that. There are others, however, that use nimh....
http://www.e-cigarette-forum.com/forum/battery-mods/105465-now-puck-cheap-parts-easy.html
http://www.e-cigarette-forum.com/forum/battery-mods/105465-now-puck-cheap-parts-easy.html
I made a puck and I am not sure what portion of it did not work as well as I thought but I did not like it. I either blame it on the batteries or the connector he suggested. I think it might work better with just a 901 connector.
Were going to try to build something with a 510 connection. It may not be exactly like the puck. But this is just a experimental thing, if i dont like the batteries i'll try using lion. TY everyone for answering my questions.
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